Java

Core Java, object oriented programming, collections, multithreading and JDBC.

100 notes in 18 topics

Topics in Java

Java

Concatenating input into SQL lets a caller rewrite your query. Bound parameters make that structurally impossible.

Java

A transaction makes several statements succeed or fail together, and batching turns many round trips into one.

Java

A unit test runs a small piece of code with known input and asserts the result, automatically and repeatedly.

Java

A test double stands in for a real dependency so a unit can be tested in isolation, quickly and predictably.